AutoCodes – GMC – P013F 2015 GMC Sierra

P013F 2015 GMC Sierra Code - HO2S Delay Response Lean to Rich Bank 1 Sensor 2

Quick Answer

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Heated Oxygen Bank 1 Sensor 2, Heated Oxygen Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Bank 1 Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P013F 2015 GMC Sierra indicates HO2S Delay Response Lean to Rich Bank 1 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Bank 1 Sensor 2, Heated Oxygen Bank 1 Sensor 2 harness is open or shorted, Heated Oxygen Bank 1 Sensor 2 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 240

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 28, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P013F 2015 GMC Sierra Description

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is started, the Engine Control Module (ECM) operates in an Open Loop mode, ignoring the HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0 - 1, 000 mV. Once sufficient HO2S voltage fluctuation is observed by the ECM, Closed Loop is entered. The ECM uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1, 000 mV indicates a rich fuel mixture. An HO2S voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed Loop earlier and the ECM to calculate the air-to-fuel ratio sooner.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the O2 sensor voltage has not increased above 350 mV within a calibrated value of accumulated airflow.

OBDII Code P013F 2015 GMC Sierra - HO2S Delay Response Lean to Rich Bank 1 Sensor 2 - AutoCodes.com — P013F 2015 GMC Sierra Code - HO2S Delay Response Lean to Rich Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P013F 2015 GMC Sierra?

Faulty Heated Oxygen Bank 1 Sensor 2
Heated Oxygen Bank 1 Sensor 2 harness is open or shorted
Heated Oxygen Bank 1 Sensor 2 circuit poor electrical connection
Low or high fuel system pressure
Fuel contamination
Faulty fuel injectors
Exhaust gas leaks
Engine vacuum leaks

How to Fix the DTC P013F 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Replacing the Rear Heated Oxygen Sensors (HO2S) usually takes care of the problem.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P013F 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P013F 2015 GMC Sierra Code

What does the OBDII code P013F mean on a 2015 GMC Sierra?

P013F indicates "HO2S Delay Response Lean to Rich Bank 1 Sensor 2," meaning the downstream oxygen sensor on Bank 1 is taking too long to respond when switching from a lean to a rich condition.

What are the symptoms of code P013F in a 2015 GMC Sierra?

Common symptoms include an illuminated check engine light, potential loss of fuel efficiency, and in rare cases, noticeable engine performance issues.

What causes the P013F code to appear on a GMC Sierra?

The causes may include a faulty downstream oxygen sensor (Bank 1 Sensor 2), exhaust leaks, wiring or connector issues, or engine problems affecting the air-fuel mixture.

Can I still drive my 2015 GMC Sierra with a P013F code?

Yes, you can drive the truck temporarily, but ignoring the issue could lead to reduced fuel efficiency or potential damage to the catalytic converter over time.

How do I diagnose the P013F code on my GMC Sierra?

Start by inspecting the Bank 1 Sensor 2 oxygen sensor and its wiring for damage. Check for exhaust leaks and test the sensor's response time with a scan tool.

How do I fix the P013F code on a 2015 GMC Sierra?

Repairs may include replacing the downstream oxygen sensor, repairing any exhaust leaks, fixing damaged wiring or connectors, or addressing underlying engine performance issues.

Is the P013F code related to the catalytic converter?

It can be indirectly related, as a malfunctioning oxygen sensor could affect the catalytic converter's efficiency, but the primary issue is with the sensor's response time.

How much does it cost to repair a P013F code on a GMC Sierra?

Replacing the downstream oxygen sensor typically costs between $150 and $300, depending on parts and labor. Additional repairs, like fixing exhaust leaks, may increase costs.

Can a dirty air filter cause the P013F code?

A dirty air filter is unlikely to directly cause this code, but it may contribute to an improper air-fuel mixture, which could exacerbate sensor response issues.

Do I need to clear the P013F code after repairs?

Yes, after performing the necessary repairs, clear the code with a scan tool and monitor the system to ensure the issue is resolved.